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See detailEnvironmental Migration
Gemenne, François ULiege

in Martiniello, Marco; Rath, Jan (Eds.) An Introduction to International Migration Studies. European Perspectives (2013)

Detailed reference viewed: 51 (9 ULiège)
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Peer Reviewed
See detailEnvironmental modulation of self-organized periodic vegetation patterns in Sudan
Deblauwe, V; Couteron, P; Lejeune, O et al

in Ecography (2011), 34

Detailed reference viewed: 20 (0 ULiège)
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See detailEnvironmental monitoring at FUL
De Backer, Louis W.; Andre, Philippe ULiege; Nicolas, Jacques ULiege

in Journal on automatic control (1992), 33

The paper presents the research and teaching activities of Fondation Universitaire Luxembourgeoise (Arlon) and more particularly in the domain of Environmental Monitoring. Particular attention is given to ... [more ▼]

The paper presents the research and teaching activities of Fondation Universitaire Luxembourgeoise (Arlon) and more particularly in the domain of Environmental Monitoring. Particular attention is given to "intelligent measurement, bio-sensors and event forecast algorithms. The team of researchers tries to integrate the three steps of monitoring: measurement, data processing and decision making support. It develops short-term fog forecasting tools, water quality sensors, soil water status quality assessment techniques and uses models describing soil and water transfers in soils and artificial intelligence techniques applied to energy management in buildings. [less ▲]

Detailed reference viewed: 37 (1 ULiège)
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See detailEnvironmental monitoring: between science and decision-making
Richir, Jonathan ULiege; Gobert, Sylvie ULiege; Lejeune, Pierre et al

Scientific conference (2016, April 13)

Detailed reference viewed: 59 (8 ULiège)
See detailEnvironmental observations: A case study of sampling techniques and their effect on model sensitivity
ANDERSON, C.; BURKE, E.; CALORE, C. et al

in MARANI, M.; RIGON, R. (Eds.) Hydrometeorology and Climatology (1997)

Detailed reference viewed: 25 (1 ULiège)
Peer Reviewed
See detailEnvironmental oscillations occuring in small-scale bioreactors during an E. coli BL21 fedbatch culture
Delvigne, Frank ULiege; Aldric, Jean-Marc; Destain, Jacqueline ULiege et al

Conference (2008, May 04)

Detailed reference viewed: 23 (8 ULiège)
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See detailEnvironmental performance of waste management through years using Life Cycle Assessment
Belboom, Sandra ULiege; Renzoni, Roberto ULiege; Digneffe, Jean-Marc et al

Conference (2011, November 03)

Detailed reference viewed: 41 (11 ULiège)
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See detailEnvironmental policies and legislation
Burny, Philippe ULiege; Petrescu-Mag, Ruxandra Malina

Book published by Les Presses Agronomiques de Gembloux (2008)

Detailed reference viewed: 21 (3 ULiège)
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See detailEnvironmental Product Declaration of purified and defluorinated phosphoric acid – difficulties and limitations of the methodology
Belboom, Sandra ULiege; Szöcs, Carl; Léonard, Angélique ULiege

Poster (2013, November)

The awareness of environment and the development of environmental product declarations (EPDs) are increasing through years. EPD becomes a need for producers in both B to B and B to C relations. EPD ... [more ▼]

The awareness of environment and the development of environmental product declarations (EPDs) are increasing through years. EPD becomes a need for producers in both B to B and B to C relations. EPD elaboration process is not without difficulties. Such a declaration requires a considerable amount of time and information, a full comprehension of the applied methodology but it also causes confidentiality problems. All these difficulties can lead to the use of simpler tools, as Carbon Footprint, which only focuses on a single impact and misses a part of the message. This case study is based on the production of phosphoric acid in Belgium using PCR for inorganic chemicals. It takes into account the use of raw materials as phosphate rocks or chemicals, their transportation to site and the manufacturing of defluorinated and purified phosphoric acid. This process also requires steam, electricity, demineralised water and sulphuric acid. These inputs are produced on site and their modelling is taken into account in this study. The first step of this process is the production of weak phosphoric acid with transformation of phosphate rocks into 30% phosphoric acid using sulphuric acid attack. The particularity of this process is the production, in this company, of a recoverable coproduct, called gypsum. The amount of this product is about 1.6 t per t of weak acid. A stoichiometric relation connects both products and is used as allocation factor, as recommended by the PCR. Through next concentration steps, fluosilicic acid is produced, also linked to the production of phosphoric acid by a stoichiometric relation. For facilities production plant, repartition of impact between coproducts is not so easy. As mentioned before, the production of steam, electricity, demineralised water and sulphuric acid are performed on site. Sulphuric acid is produced by the combustion of liquid sulphur provided by oil refineries. Two different units produce both sulphuric acid and steam through the combustion of liquid sulphur but only one of them transforms a part of steam into electricity. Repartition of impact between sulphuric acid and steam can be achieved using a physical relation based on thermodynamic values which can be transformed into mass relation. For repartition between electricity, steam and sulphuric acid, the main difficulty is that electricity does not have a weight and a transformation into steam shall be achieved to use the same relationship that previously. This way of allocating is not very obvious for producers, even if it is the one recommended by the PCR. As electricity and steam are coproduced, an energetic allocation is also relevant and gives completely opposite results for repartition of impact of each product. In that case, sulphuric acid impact achieves a non-negligible part of the impact which modifies greatly results of phosphoric acid production. This is a problem when you know that environmental product declarations are used to compare products on environmental criteria, using mainly values of climate change or energy impacts. Producers are then reticent to publish such a value which can lead to a loss of customer confidence, even more when they occupy a leading position on the market and taking into account that a comparison with other producers is quite impossible. More specific guidelines should be set to indicate the best way to perform an environmental product declaration in specific fields using a specific way of allocation. [less ▲]

Detailed reference viewed: 165 (5 ULiège)
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See detailEnvironmental product declarations of mineral paving, a tool for sustainable product choices
Belboom, Sandra ULiege; Renzoni, Roberto ULiege; Tourneur, Francis ULiege et al

Poster (2012, May 30)

This study performs the environmental product declarations for three Belgian mineral products, two granite and one sandstone paving. Both main goals of this work were to obtain Belgian environmental ... [more ▼]

This study performs the environmental product declarations for three Belgian mineral products, two granite and one sandstone paving. Both main goals of this work were to obtain Belgian environmental product declarations to strengthen existing databases and to get similar information for their Asian counterparts. Indeed, competition with China for bluestone products and with India for sandstone pavement is very important due to very competitive prices despite their foreign origin and possibly higher induced environmental impacts. Environmental product declarations of Belgian bluestone and sandstone products were conducted in accordance with the ISO standards and following the stand-ard NF P 01-010. CML 2001 method was used to obtain environmental impacts for ten categories as climate change, acidification, abiotic resources depletion, etc. Boundaries of the Belgian systems are the same and the life cycle assessment comprises all steps from the extraction of minerals to the implementation on site. Use and end of life steps were neglected due to the low required maintenance and the inert nature of the paving. For Asian products, the analysis is reduced to the transportation of the functional unit, mainly due to the lack of reliable data. This work highlights the negative effect of long distance transportation of heavy and non-energetic products. Indeed, the environmental impacts of the sole transport of Asian products are at least as important as those obtained for the whole life cycle of Belgian products, whatever the category taken into account (climate change, acidification, air pollution, etc.). CML 2001 methodology was successfully applied to these five studies about three Belgian products and two abroad transportation steps. Comparison of the 5 corresponding environmental product declarations permits to highlight the importance of the transport on environment and to promote, supposing equal performance, local prod-ucts in a more environmental-friendly point of view. [less ▲]

Detailed reference viewed: 83 (5 ULiège)
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See detailEnvironmental product declarations of mineral paving, a tool for sustainable product choices
Belboom, Sandra ULiege; Renzoni, Roberto ULiege; Tourneur, Francis ULiege et al

Poster (2012, March 22)

This study performs the environmental product declarations for three Belgian mineral products, two granite and one sandstone paving. Both main goals of this work were to obtain Belgian environmental ... [more ▼]

This study performs the environmental product declarations for three Belgian mineral products, two granite and one sandstone paving. Both main goals of this work were to obtain Belgian environmental product declarations to strengthen existing databases and to get similar information for their Asian counterparts. Indeed, competition with China for bluestone products and with India for sandstone pavement is very important due to very competitive prices despite their foreign origin and possibly higher induced environmental impacts. [less ▲]

Detailed reference viewed: 43 (10 ULiège)
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See detailEnvironmental Protection and Tax Law: Belgian approach to the development of renewable energy and sustainable transport
Vanrykel, Fanny ULiege

Scientific conference (2017, June)

In the relation between human kind and nature, humans are often the strong and the environment the weak. Humans destroy animals’ habitat, affect biodiversity and cause climate change. By their behaviors ... [more ▼]

In the relation between human kind and nature, humans are often the strong and the environment the weak. Humans destroy animals’ habitat, affect biodiversity and cause climate change. By their behaviors, they also threaten future generations. Progressively, the law has started to regulate this relation and environmental law has emerged. Quickly, taxes and tax incentives have been considered a useful mean to achieve environmental protection. This contribution tells the story of how taxes and tax incentives have been used in Belgium to influence human behaviors towards a greater protection of the environment. In particular, it addresses the issue of climate change, by focusing on two aspect of this question: the development of renewable energy and sustainable transport. It is divided in two parts. The first one presents the current tax measures in relation with this question while the second one deals with their ability to achieve their goal. [less ▲]

Detailed reference viewed: 46 (2 ULiège)
See detailEnvironmental reconstruction of the Frasnian Carbonate Platform using sedimentology and magnetic susceptibility.
Da Silva, Anne-Christine ULiege; Boulvain, Frédéric ULiege

in Abstracts and field guide, 6th Annual Conference of SEPM-CES SEDIMENT 2009 (2009)

Detailed reference viewed: 15 (3 ULiège)
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See detailEnvironmental relevance of end of life vehicle valorisation - LCA of COMET case study
Groslambert, Sylvie ULiege; Belboom, Sandra ULiege; Lewis, Grégory et al

Conference (2014, November 17)

LCA of Electric Vehicles Recycling : Comparison between three business lines of dismantling

Detailed reference viewed: 37 (3 ULiège)
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See detailEnvironmental Respiratory Diseases. Some examples of physiopathological processes in domestic animals
Hamoir, Julien; Gustin, Pascal ULiege

in Dunlop, Robert H.; Malbert, Charles-Henri (Eds.) Veterinary Pathophysiology (2004)

Detailed reference viewed: 21 (0 ULiège)
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Peer Reviewed
See detailEnvironmental sensitivity for milk yield in Luxembourg and Tunisian Holsteins by herd management level.
Hammami, Hedi ULiege; Rekik, Boulbaba; Bastin, Catherine ULiege et al

in Journal of Dairy Science (2009), 92(9), 4604-12

Milk production data of Luxembourg and Tunisian Holstein cows were analyzed using herd management (HM) level. Herds in each country were clustered into high, medium, and low HM levels based on solutions ... [more ▼]

Milk production data of Luxembourg and Tunisian Holstein cows were analyzed using herd management (HM) level. Herds in each country were clustered into high, medium, and low HM levels based on solutions of herd-test-date and herd-year of calving effects from national evaluations. Data from both populations included 730,810 test-day (TD) milk yield records from 87,734 first-lactation cows. A multi-trait, random regression TD model was used to estimate (co)variance components for milk yield within and across country HM levels. Additive genetic and permanent environmental variances of TD milk yields varied with management level in Tunisia and Luxembourg. Additive variances were smaller across HM levels in Tunisia than in Luxembourg, whereas permanent environmental variances were larger in Tunisian HM levels. Highest heritability estimates of 305-d milk yield (0.41 and 0.21) were found in high HM levels, whereas lowest estimates (0.31 and 0.12, respectively) were associated with low HM levels in both countries. Genetic correlations among Luxembourg HM levels were >0.96, whereas those among Tunisian HM levels were below 0.80. Respective rank orders of sires ranged from 0.73 to 0.83 across Luxembourg environments and from 0.33 to 0.42 across Tunisian HM levels indicating high re-ranking of sires in Tunisia and only a scaling effect in Luxembourg. Across-country environment analysis showed that estimates of genetic variance in the high, medium, and low classes of Tunisian environments were 45, 69, and 81% lower, respectively, than the estimate found in the high Luxembourg HM level. Genetic correlations among 305-d milk yields in Tunisian and Luxembourg HM environments ranged from 0.39 to 0.79. The largest estimated genetic correlation was found between the medium Luxembourg and high Tunisian HM levels. Rank correlations for common sires' estimated breeding values among HM environments were low and ranged from 0.19 to 0.39, implying the existence of genotype by environment interaction. These results indicate that daughters of superior sires in Luxembourg have their genetic expression for milk production limited under Tunisian environments. Milk production of cows in the medium and low Luxembourg environments were good predictors of that of their paternal half-sisters in the high Tunisian HM level. Breeding decisions in low-input Tunisian environment should utilize semen from sires with daughters in similar production environments rather than semen of bulls proven in higher management levels. [less ▲]

Detailed reference viewed: 191 (40 ULiège)
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See detailEnvironmental significance of Upper Miocene phosphorites at hominid sites in the Lukeino Formation (Tugen Hills, Kenya)
Dericquebourg, Perrine ULiege; Person, Alain; Ségalen, Loïc et al

in Sedimentary Geology (2015), 327

The Lukeino Formation contains an important sedimentary and fossiliferous record of the late Miocene (6.09–5.68 Ma), which has in particular yielded the fossil remains of the oldest East African bipedal ... [more ▼]

The Lukeino Formation contains an important sedimentary and fossiliferous record of the late Miocene (6.09–5.68 Ma), which has in particular yielded the fossil remains of the oldest East African bipedal hominid called Orrorin tugenensis. This fluvio-lacustrine sedimentary succession crops out in the Kenyan part of the East African Rift. It is mainly composed of clay to sandy clay deposits intercalated with volcanic ash horizons, and localized layers of carbonates and diatomites. A detailed sedimentological and mineralogical study of the Lukeino Formation was conducted to throw light on the environmental conditions in which the hominids lived. Several centimetric, relatively continuous and indurated phosphatic horizons, of sedimentary origin, were identified at two sites (Sunbarua and Kapcheberek). Mineralogical (XRD) and geochemical analyses as well as observations by SEM, which was coupled with an energy dispersive spectroscopy (EDS) microprobe, indicate that the autochthonous phosphate layers are composed of a micritic matrix of francolite (38–93%), with incorporation of silicates in variable proportions from one layer to another. The phosphate matrix contains very well preserved and abundant diatom frustules in the basal phosphate layer. These diatoms are identified as Aulacoseira granulata, implying a pH of 7.8–8.2 for freshwaters of the Palaeolake Lukeino. Calcitic tubular structures, linked to a possible bacterial origin, are also observed locally. Phosphate layers occur abruptly within a thick clay–sandy series, associated with an intense runoff phase during the deposition of this interval of the Lukeino Formation. The massive and cyclic input of phosphorus to the lake promoted productivity to the stage where it caused a diatom bloom. The establishment of several phosphate horizons testifies to successive phases of eutrophication of Palaeolake Lukeino. The diatom cells provided some of the organic matter, which was decomposed by bacterial activity at the bottom of the lake in suboxic conditions, but in insufficient quantities to fully form the phosphatic materials. The rest of the organic matter needed for phosphogenesis came from terrigenous supply (plant debris), suggesting the presence of dense vegetation in the catchment of the Palaeolake Lukeino, during this well-drained interval of deposition of the Lukeino Formation. [less ▲]

Detailed reference viewed: 49 (8 ULiège)
See detailEnvironmental site layout planning: solar access, microclimate and passive cooling in urban areas
Littlefair, P.; Santamouris, M.; Alvarez, S. et al

Book published by CRC (2000)

Detailed reference viewed: 293 (15 ULiège)